Malicious PDF — malware analysis report

Static analysis result for SHA-256 de31da95a6297bad…

MALICIOUS

PDF

199.9 KB Created: 2020-07-26 23:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c23e4333b29c1c138f30aa8fd1c16b0 SHA-1: 3496cc1156576c5b15137df158258c32903bd287 SHA-256: de31da95a6297badbfe22f599bcde926cb5472fc38b8e6f97ae1cf0caf9892aa
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits heuristics for a password-protected archive lure and a secret recovery lure, suggesting a social engineering attempt to extract sensitive information. The document body, though heavily obfuscated, contains text related to a 'Blackberry 10 classic user manual', likely serving as the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 7

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=blackberry+10+classic+user+manual In PDF document text
    • http://files.fccmeredith.com/uploads/1/3/1/4/131437064/sigugi-lenubukula-gokebotugopo-lejetututek.pdfIn PDF document text
    • http://files.stonesj.org/uploads/1/3/1/4/131453718/2883092.pdfIn PDF document text
    • http://files.mastergardenerscabarrus.org/uploads/1/3/1/8/131871852/932e8.pdfIn PDF document text
    • http://files.ocalawestumc.com/uploads/1/3/1/4/131453453/baxewigevikenilawu.pdfIn PDF document text
    • http://files.usedlicense.net/uploads/1/3/1/4/131454172/kuwugisutel_bosawirexuxobod_mupizi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9046/9283/files/80593085550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6677/files/penazugaxivitamakefowef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2906/0001/files/2006338875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/7331455826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/72252105553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/3426493366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9972/3678/files/zujiwubojaromiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8955/1770/files/livesagigisar.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002d786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D786 5188 bytes
SHA-256: c41c5e4f0058f8d5ac243e9dbedabc00560b6cac88ef43310cc15765865e98dc
font_01_sfnt_off0002e912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E912 12532 bytes
SHA-256: 14ca6e68a76d93f80a9e69a98bf998c38459a884381d63a22fb7f6e48302b6c5

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